[FIX] account: skip tax recomputation during post

Activate avatax.
Create a contact [1], and validate it with avatax.
Create a product A, priced 11.70, add avatax code [P0000000]
Create a product B, priced 9.85, add avatax code [FR000000]
Create an invoice, add the two products, set avatax fiscal position
Compute taxes with avalara, taxes will be 0.73
Confirm invoice

Taxes will update to 1.35. This occurs during `_post`:
when invoice date is set, invoice sync will recompute taxes
for all lines.

[1]
Client Avatax-test
133 Route 20
North Oxford MA 01537-1210
United States

opw-3174739

closes odoo/odoo#116872

X-original-commit: 7e399b0eb4daa5151eba59a65bc649d453ca6883
Related: odoo/enterprise#38908
Signed-off-by: William André (wan) <wan@odoo.com>
Co-authored-by: william-andre <wan@odoo.com>

addons/account/models/account_move_line.py

@@ -444,7 +444,7 @@ class AccountMoveLine(models.Model):
         for line in self:
             line.partner_id = line.move_id.partner_id.commercial_partner_id
 
-    @api.depends('move_id.date', 'move_id.currency_id')
+    @api.depends('move_id.currency_id')
     def _compute_currency_id(self):
         for line in self:
             if line.display_type == 'cogs':